Nexans was awarded the deal by electrotechnical contractor Linka for the Roan project in central Norway.
The 71-turbine 255MW project is due online in the first half of 2018. Nexans will manufacture 200 kilometres of 36kV cables to connect the turbines to the grid
Last week, Statkraft, the lead developer of the Fosen Wind cluster, and turbine supplier Vestas, announced a jobs programme to hire engineers to operate the Roan project.
The full 1GW project, first announced in January 2015, is expected online in 2020.
The six projects will comprise 278 Vestas V117 and V112 3.45MW turbines with the uprated power mode meaning each machine is capable of 3.6MW output.
Statkraft holds a 52.1% stake in the Fosen Wind development consortium with Nordic Wind Power (40%) and TronderEnergi (7.9%) in support.
The complex is set to double Norway's installed onshore wind capacity, which was 830MW at the end of 2016.